TM 10-3930-669-20 2-14.  ELECTRICAL SYSTEM TROUBLESHOOTING (CONT). 21.  TRANSMISSION DOES NOT OPERATE IN FORWARD. INITIAL SETUP Tools and Special Tools Tool Kit, General Mechanic's: Automotive (Item 1, Appendix B) Multimeter (Item 2, Appendix B) STE/ICE-R (Optional) (Item 14, Appendix B) References TM 10-3930-669-10 Equipment Condition Engine OFF (TM 10-3930-669-10) MAIN POWER switch OFF (TM 10-3930-669-10) Parking brake applied (TM 10-3930-669-10) Wheels chocked (TM 10-3930-669-10) NOTE The following troubleshooting procedures cover the transmission forward control circuit, but the general steps can apply to the transmission reverse control circuit. KNOWN INFO Transmission operates in reverse. POSSIBLE PROBLEMS Forward control solenoid faulty. Wire 35 faulty. Forward control switch faulty. Wire 39 faulty. TEST OPTIONS Voltage test STE/ICE-R #89. REASON FOR QUESTION If 22 to 24 vdc are present forward control solenoid is faulty. ¬ 2-250